No, not at all, I think it's definitely harder - I actually mistranslated your example, forgetting the bottom right corner was not a blank, and got a harder puzzle.
Now that I've corrected it, it seems to be solvable without doing DFS, ie. all cells can be set by direct implication. So it's probably at most "medium", say 2-3 on a scale of 5.
(on MS: agree totally, with the single exception of VB6, the only thing that keeps me running Windows!)